Bearing.



Patented Sept. 26; I899. T. VON ZWEIGBERGK.

BEARING.

(Application filed June 30, 1899.)

(N0 llo del.)

171W 2 6 4 6L3 4 d4 2 Z uaa; a l z I ilnirrnn STATES THORSTEN VONZWEIGBERGK, OF CLEVELAND, OHIO.

BEARING.

SPECIFICATION forming part'of Letters Patent No. 633,775, datedSeptember 26, 1899.

Application filed June 30, 1899.

To (l ll whom it 71mg concern:

Be it known that I, THORSTEN vox Zwnre- BERGK, residing at Cleveland, inthe county of OuyahogaandState of Ohio, haveinvented a certain new anduseful Improvement in Bearings, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings.

The object of my inventionis to reduce the friction of roller-bearingsby keeping the bearing-rollers apart without adding undue friction indoing so. I accomplish this by placing between the bearing-rollersseparating-rollers which bear on such surfaces that they are caused torotate in the opposite direction from the bearing-rollers, so that thecontacting surfaces roll instead of slide.

The invention consists of the means for efficiently performing this, ashereinafter described, and set out in the claims.

The drawings clearly illustrate my invention.

Figure l is a vertical central longitudinal section of the bearing asapplied to a hub and axle. Fig. 2 is a vertical central longitudinalsection of the outer end of such hearing embodied with my means forkeeping the bearing-rollers separated. Fig. 3 is an end view, partlybroken away, of the bearin g shown in Fig. 2. Fig. 4: is a diagramillustrating the direction of movement of the rolling members shown inFig. 2.

Referring to the parts by letters, A and B represent the two members ofthe hearing which are to be antifrict-ionally journaled. A may beconsidered, for example, as a carriage-axle, and B the hub of the wheel.

0 represents the conical antifriction-rollers, which roll in racewaysformed by the female conical surface 1) within the flaring ends of thehub and the male conical surfaces a and D on the axle. The surface orcone a is preferably integral with the axle, and the cone D isadjustable by screwing onto a threaded end a of the axle, the nuts 0,being provided to hold the cone D in place. The rollers O are held inthe hearing by flanges a and d on the two cones just beyond the conicalsurfaces thereof. Similar flanges a? and d are provided at the innerends of the cones. The

slant height of the cones a and D between the flanges 0. a, and d d issubstantially Serial No. 722,373. (No model.)

the same as the slant height of the rollers C. The theoretical apex ofeither conical surface on the hub is at a point indicated by P on theaxis of the bearing. This same point is the apex of the cone a or D andof the conical rollers rolling thereon, as well as on the axis of thoserollers. This construction maintains the bearing perfectly true. Thebearing just described has the large supportingsurface incident toroller-bearings, but is also adapted to resist end thrust, whichrollerbearings are not. My hearing may also be very conveniently andeasily adjusted by simply turning the cone D and locking it with thejam-nuts c In order to still further reduce the friction of the bearing,I may put conical separatingrollers between the bearing-rollers 0, theseseparating-rollers being so supported that the surface in contact withthe bearing-roller rolls in the same direction with that roller insteadof opposite to it. Such a construction is shown in Figs. 2 and There thebearing-rollers C are separated by smaller conical rollers E, which aresupported on their outer surface by members which are stationary withrespect to the support for the inner surface of the bearing-rollers.Thus the rollersEbear at the outer surface of their inner ends on thenut F, which screws onto the cone D against a shoulder d thereon,'and attheir larger ends these separating-rollers bear on their outer sidesupon the ring G, which screws onto a flange (Z of the cone and is lockedby a jamnut H, and also against the flangej of the ring J, which screwsonto the ring G and is locked by a jam-nut K. Thus the outer surface ofthe separatingrollcrs rolls in the same direction as the inner surfaceof the bearing-rollers.

The inner surface of the separating-rollers is supported by loose ringsM and N. The bearing-rollers contacting with the separating-rollerscause them to roll, and they give movement in the opposite direction tothe rings M and N. The latter are loose on the cone D. The frictioncaused by their contact with the supporting-cone is immaterial, as theybear none of the weight, and they may even be out of actual contact withthat cone on their cylindrical surface. The arrangement of the two ringsG and J allows a ring G may be screwed ontothe correspondreadyadjustment of these separating-rollers. After-the main bearing isadjusted by the cone 1) and the nuts a the ring Gis screwed toward thehub until the separating-rollers E take up the loose play between thebearingrollers. This ring is then locked by the jamnut I-I,-and the ringJ is screwed toward the outer end of the bearing until the surface jcontacts with the separating-rollers, when the latter ring is locked bythe jam-nut K. This ring not only furnishes an additional bearing forthe separating-rollers, but also serves as a dust-cap to protect thebearing.

Then the separating-rollers are used, the bearing at the other end ofthe hub is substantially the same as that shown in Fig. 2, except thecone may be rigid with the axle. In installing such bearing the nut Hand the ing stationary cone, the rings LT and M put in place, theseparating-rollers placed on them, and the rings J and the nut F screwedon. The bearing-cones C may then be placed around the surface and thehub slipped on with its conical surface against them, and the nut D,with the parts it carries previously placed on it, screwed into place.

The diagram Fig. 4 indicates how the separating-rollers roll on thebearing-rollers, preventing the friction which would result from thebearing-rollers rubbing past each other in opposite directions. If thehub is revolved in the right-hand direction, the surfaces D and 7'remaining stationary, the rollers C will be given a right-hand rotationand the rollers E a left-hand rotation, the latter giving to the ring Na right-hand rotation.

Having described my invention, I claim- 1. The combination, with aroller-bearing, of a set of separating-rollers lying between thebearing-rollers and extending longitudinally beyond them,the ends of theseparatingrollers rolling on one side on a surface which i is in thesame condition of rest or movement in the same direction as the surfaceon which 5 the opposite side of the bearing-rollers roll, substantiallyas described.

In a bearing, in combination, a male I member, a female member, a set ofbearingrollers between said members, a set of sepa- 5 rating-rollersbetween the bearing-rollers, said separating-rollers being of smallerdiame ter and longer than the bearing-rollers and extending beyond themat each end, female surfaces on which the outer sides of the projectingends of said separating-rollers bear which surfaces in operation arerigid with said male member, substantially as described.

The combination with a member having a male conical surface, and amember having a female conical surface, which surfaces are at differentangles to the axis, a set of conical bearing-rollers rolling between thesaid surfaces, and a second set of rollers between the bearing-rollersand separating them, said separating-rollers rolling on their outersides on a surface which is stationary with respect to the said maleconical surface, substantially as described.

4. The combination with a member having a male surface, a surroundingmember having a female surface, a set of bearing-rollers rolling betweenthem, a set of separatingrollers between the bearing-rollers, a femalesurrounding bearing for the separating-rollers stationary with respectto the male surface of the main bearing, and loose rings forming aninner support for the separating-rollers, substantially as described.

5. The combination of a cone D, a surrounding member having a conicalsurface I), and the bearing-rollers 0 between them, with theseparating-rollersE between the rollers O,

a nut F and a ring G screwing onto the cone D and forming an outerbearing for the separating-rollers, and the rings M and Nlooselysurrounding the cone D and forming an inner bearing for theseparating-rollers, substantially as described.

6. The combination with a cone D, the ring N loosely surrounding thesame, a ring G screwing onto the cone, ring J screwing onto the ring G,a surrounding memberof the bearing, having a female conical surface I);the rollers 0 between said surface and'the cone, and theseparating-rollers E between the rollers C, said separating-rollersbearing at their inner surface on the ring N, and their outer surface onthe ring J, and their outer ends 1 against the ring G, and means forsupporting the other end of the said separating-rollers, substantiallyas described.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

'lHORSTEN VON ZWEIGBERGK. \Vitnesses:

A. W. MAYERs, ALBERT H. BATES.

